刚性桩复合地基的变形计算及研究  

Deformation Calculation and Research of Rigid Pile Composite Foundations

作　　者：胡博[1] 刘国超[1] 闫洪涛[1] 

机构地区：[1]天津市勘察院,天津300222

出　　处：《天津科技》2015年第7期7-8,14,共3页Tianjin Science & Technology

摘　　要：分析了复合地基变形计算的两条路径和垫层压缩模量随荷载水平的变化,计算桩顶应力和桩顶应力变化范围,对刚性桩复合地基的变形进行控制,得出结论:褥垫层的压缩量会成为复合地基变形量的主要部分,其厚度不应与桩径挂钩,褥垫层厚度越薄,越能减少地基的不均匀变形。Two paths of deformation calculation of composite foundations and the change of compression modulus of cushionwith the load were analyzed,change range of the stress and the stress of pile top were calculated and rigid pile compositefoundation deformation was controlled. A conclusion was drew that cushion compression will become a major part of thedeformation of composite foundations;its thickness should not link up with pile diameter;and the thinner the cushionthickness is,the less inhomogeneous deformation the foundation will be.

关 键 词：复合地基 桩顶应力 垫层厚度 

分 类 号：TU470.3[建筑科学—结构工程]